Page 26 - Science class 4

1. ___________ is the stored form of sugar.

2. Green plants make their own food by a process called ___________ .

3. A green pigment present in leaves is called ___________ .

4. The part which is flat and green is called ___________ .

5. Small openings present on the lower surface of a leaf are called ___________ .

6. A kind of sugar called _________ is made during photosynthesis.

Clear Approach
Clear Approach

Write ‘T’ for true and ‘F’ for false statements :

1. Sunlight is not necessary for photosynthesis.
2. Plants produce their own food in their roots.

3. Oxygen is given out during photosynthesis.

4. Non-green leaves cannot prepare their own food.
5. A cactus plant has green leaves.

Substituting Yourself
Substituting Yourself

Give one word for each one of the following :
1. The green and flat part of a leaf ___________

2. Process of making food by green plants ___________

3. The sugar made in the leaf ___________

Brush Up Your Learning
Brush Up Your Learning

A. Answer the following questions :

1. Explain the structure of a leaf.

2. What is photosynthesis? Draw the diagram showing the process of
photosynthesis.

3. How do the following plants get their food?

(a) Mushrooms (b) Dodder (c) Cactus
4. How do plants use their food?

5. Define the following.

(a) Chlorophyll (b) Photosynthesis (c) Leaf blade

(d) Stomata (e) Leaf apex

Discover 27 Science/4
27
27